>> romney needs to have a moment like what some of us saw this week, when bill clinton introduced him, where he had this self-deprecating, normal moment, where his humanity shows through. he needs to do the impossible. he needs to orchestrate a moment where he can create that in a way that seems and feels spontaneous and natural. near impossible. >> very hard. nicolle wallace, thank you very much. >>> we're going to talk about this and all of the politics sunday on "this week." our headliner, new jersey governor chris christie. >> looking forward to that, george. >>> and now to the very latest on rental car dangers. we first brought you the story on "gma" about how rental car companies had been renting vehicles that were under recall but not fixing them. five of the rental car companies have pledged to stop that practice. and abc's brian ross is here with the latest. >> reporter: good morning, amy. in a move that only seems to make common sense, enterprise, the biggest rental car company, has joined avis, hertz, thrifty dollar, and national to support a federal law to make it impossib